Telescope mining-pipe.



W. W." BELSON. TELESGOPE MINING PIPE. APPLICATION PILED JUNE 24, 190B.

'QOOACL` f. 'Patentedoet.6,19os.

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TH: Nomus PETERS co.. WASHING-ran, n. c.

. fully explained by reference tothe accomy UNITED f www;

wILLis wfBElEsou/ornnnwoon crrv,Y CALIFORNIA.'

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p `Speci-icationg.onf Letters Patent," Patented Oct. 6, 1908. y l l ippueauml'mea June'zifleqaf,serialnq. 44o,1e2. Y

Y To all-'whom 'it may concern; F u 'y Be it known that LWVrLLrs citizen of the United States, residing atRedwood City, in the countyV of San Mateo and,V

State of California, haveinventednew and useful Improvements in Telescope Mining-l Bipes, of 'which the following is a 'specification. 1

My inventionrelates to `a device Vto be used 1n conJunctionwlth extensible ca1ssons, suchv as are employed for recovering valuable Inasion without interruptingthe work, and in` details of construction which will be more panying drawings, in .which-' Figure l isapartly sectioned elevation fof Fig.` 2 is a section of the` pipe on line 22 of. Fig. Vl. yFig'. '3 4is the`v lower `end of pipe A, showing` (broken)l the telescope pipe.

chains fully extended;

Mining enterprises are carried` on inrivers` where valuable gold-bearing sands aresub` `merged to considerable depths by 'the` use of;

caissons which are made insections, and may be gradually extended as the work progresses; these caissons serving toprotect a. diver who conducts the operation at the bot-V tom.

The sand is raised in various ways. In"V my invention I haveshown a pipetowhich a vacuum may be applied sufficient to cause the sand which is deliveredat the lower end of the pipe to be drawn up and discharged at the top. Suchpipes are ymoved about and directed by the diver, and 1 when thegspace within the caisson has Abeen cleared, it is nec-` essary to extend thepipefor Afurther operafv tions. This isgusually effected by-addingA sections ofthe pipe, and as these sections are usually united by means offlanges andbolts passing therefthrough, 'the whole operation must be suspendedV Quntil anew section; of

pipe has been added, and the devicelowered into place. This "stoppage of the work al# lows exterior sand to wash in, and the lower Part of the caisson often "to becomelf obstructed with sand from'the outside which,

being surface sand or strippings, has. no

great value, and this mustall be withdrawn before the gold-,bearing sand at thevloottomA is again reached.

Vsection A being the upper section, and having suitable flanges 2 and 3 at the lower end, between which a substantially water-tight yielding collar 4 is xed.

y The section B is slidable within'the section A, andthe collar forms a sufficiently tight joint about the section B to prevent lossV of pressure by leakage. This section .has also a iange 5l at the lower end, and this flange has means provided for the attachment of chains 6. p

v'lheflanges 2 and 3 may. be slotted as in 8 for otherwise provided with means for the engagement of links of the chain or engaging devicescarried thereby. The chain may 3 have hooks, Vor other suitable engaging devices 7 upon it, and when the work com- :mences, thesection- B being fully drawn up into the section A, the latter is lowered until vthe lower end of the section B rests upon the surface of-'the sand, or is in position for work. The chains connecting the pipe B with the vpipe A retain the former in this position until all the work within its scope of movement has been completed. VIt is then only necessary to release the chain attachments and allowthe pipe B to descend as far as is necessary to complete the work.'`

The chains are again connected with the pipe -A, and the ,work thus carried on until the full extent of the pipe B has been utilized. By drawing this pipe up and attachinganother section to the lower end, the work may be again carried on with little or no inter-V ruption, and the ingress of valueless mate' rial into the caisson is thus prevented.

I-Iaving thus described my invention, what I claim and desire `to secure'by Letters Patent is Y 1; In `an apparatusv 0f the character described, asuction pipe having {Vianges at the lowerV end, a flexible joint-forming collar clamped between, an extension pipe slidable within the first named pipe and through the collar, said extension having its lower end produced", and means by'which said pipe is suspended fromthe uppermost section, and

having peripheral' slits and said means inadapted vto collect material when a vacuum is cludingifiexible elements joined together and" pipe and having its links adapted to enter adapted to enter said slits and to stand, crosst said. slots and to stand cross-wise above the wise above the same. same, whereby the lower pipe may be gradu- 15 2. In an apparatus of the character deally extended by shifting` the positions of 5 scribed, the combination of a main pipe hat the links..

ing flanges, and a joint-forming collar at. In testimony whereof I have hereunto set the lower end, said Hang-es being provided l: my handfin. presence of two subscribing witwith peripheral slots, asecond pipe slidable Vnesses.

through the collar and forming a tight joint IVILLIS IV. BEESON.

10 therewith, and having its lower end adapted Witnesses:

toA collect material when aV Vacuum is pro- G. GRAY, duced*7 andV chains oonneotedf with the second K. H. Iims'r. 

